CN108578891A - A kind of hardware circuit of pain electric pulse therapeutic equipment - Google Patents
A kind of hardware circuit of pain electric pulse therapeutic equipment Download PDFInfo
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- CN108578891A CN108578891A CN201810456721.1A CN201810456721A CN108578891A CN 108578891 A CN108578891 A CN 108578891A CN 201810456721 A CN201810456721 A CN 201810456721A CN 108578891 A CN108578891 A CN 108578891A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/36021—External stimulators, e.g. with patch electrodes for treatment of pain
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
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Abstract
The present invention relates to a kind of hardware circuits of pain electric pulse therapeutic equipment, including microcontroller, bluetooth module, booster circuit, pulse shaping circuit, USB bridgt circuits, LED indicating circuit, power management module, key-press module, 3-axis acceleration sensor and lithium battery, microcontroller output pin is separately connected bluetooth module, booster circuit, pulse shaping circuit, USB bridgt circuits, LED indicating circuit, power management module, key-press module, 3-axis acceleration sensor input terminal, wherein booster circuit output end connects pulse shaping circuit input terminal, power management module output end connects lithium battery input terminal, advantage of the present invention is that the electrical impulse frequency used and pulse width are different from existing product, user can select treatment intensity according to oneself symptom and using effect.
Description
Technical field
The present invention relates to medical system technical field more particularly to a kind of hardware circuits of pain electric pulse therapeutic equipment.
Background technology
The purpose of pain therapy is to mitigate or terminate panic attacks, alleviates concomitant symptom, prevents recurrent pain, treatment means
Including two aspects of drug therapy and non-drug therapy, using drug therapy there are a degree of toxic side effect, patient may
There is adverse reaction.
Non-drug therapy is mainly physical therapy, electrotherapy can be used, magnetic therapy, psychological counseling relieve stress etc., with drug
Treatment is compared, and maximum advantage is exactly the toxic side effect for being not in drug.
In terms of electrotherapy, electrode typically is placed at the certain positions of body surface, applies electric signal.The electrode that body surface is placed
Generally all far from chest, and apply voltage, electric current all very littles, any influence will not be generated to heart.Electrotherapy mainly has directly
It is voltaism, galvanoiontophoresis therapy, low, except large quantity of moisture is contained in human body, electrolysis that also much can be conductive
Matter and non-conductive dielectric, because the body of this person is actually the complicated conductor that an existing resistance has capacitive properties again, this
It is the material base of electrotherapy, reactions vary to electro photoluminescence of different nature for body, and cure mechanism is also different, and low-frequency current is changeable
The film potential of nerves and muscles cell is allowed to excited and generates contraction；The electric current of intermediate frequency of low frequency modulations can make the thick of sensory nerve
Fiber is excited, inhibits the incoming of fine fibre impulsion, therefore analgesic activity is stronger, but the electrical impulse frequency of existing therapeutic equipment and
Pulse width is all specific, and specific electric impulse signal cannot be exported by microcontroller（Transcutaneous electrical stimulation-TENS）,
Shank top body surface sensory nerve is stimulated, inhibited by micro controller system, interrupt pain information in central nervous system
It transmits.
Invention content
All it is specific to solve electrical impulse frequency and pulse width, specific electric arteries and veins cannot be exported by microcontroller
Rush signal（Transcutaneous electrical stimulation-TENS）, stimulation shank top body surface sensory nerve, inhibited by micro controller system, in
Disconnected transmission of the pain information in central nervous system, the present invention provides a kind of hardware circuit of pain electric pulse therapeutic equipment,
It is different from existing product to be mainly characterized by the electrical impulse frequency used and pulse width.This product is exported by microcontroller
Specific electric impulse signal（Transcutaneous electrical stimulation-TENS）, user can be according to the selection treatment of oneself symptom and using effect
Intensity（Pulse current）, stimulation shank top body surface sensory nerve is inhibited by micro controller system, interruption pain information is in
Transmission in pivot nervous system；Transcutaneous electrical stimulation can promote endorphin of the human body release with analgesic activity simultaneously（
Coffee sample）Substance generates analgesic activity.
The technical scheme is that：A kind of hardware circuit of pain electric pulse therapeutic equipment includes at least microcontroller, indigo plant
Tooth module, booster circuit, pulse shaping circuit, USB bridgt circuits, LED indicating circuit, power management module, key-press module, three
Axle acceleration sensor and lithium battery, it is characterised in that：The microcontroller output is separately connected bluetooth module, boosting electricity
Road, pulse shaping circuit, USB bridgt circuits, LED indicating circuit, power management module, key-press module, 3-axis acceleration sensing
Device input terminal, wherein booster circuit output end connect pulse shaping circuit input terminal, and power management module output end connects lithium electricity
Pond input terminal, lithium battery is the power supply of each modular circuit in power management module, and power management module is microcontroller power supply, micro-control
Lithium battery voltage boosting is become a DC voltage VH by device control booster circuit processed, and voltage VH powers for pulse shaping circuit,
Pulse shaping circuit exports pulse signal under the control of the micro-controller, and 3-axis acceleration sensor transmits three dimensions side
Position information mutually transmits remote control signal, USB bridgt circuits and microcontroller to microcontroller, microcontroller and bluetooth module
Mutual transmission procedure information, the pulse shaping circuit include H-bridge circuit, H-bridge circuit include four NPN triode Q5, Q6,
Q9 and Q11, four power MOS pipes Q4, Q7, Q8 and Q10, Q4 and Q8 are P-channel enhancement type metal-oxide-semiconductor, and Q7 and Q10 is N-channel
Enhanced metal-oxide-semiconductor.
The microcontroller uses the microcontroller of model MSP430.
The booster circuit uses TPS73601 microcontrollers, circuit to connect microcontroller by P6.6 pins, microcontroller
Control signal is transmitted to the U2 chips in booster circuit by P6.0 mouthfuls.
The pulse shaping circuit passes through P4.1, P4.2, P4.3, P4.4, p6.5, TEST pin on pulse shaping circuit
Connect with microcontroller respective pins, pulse shaping circuit generate pulse signal by P4.1, P4.2 on pulse shaping circuit,
P4.3, P4.4, p6.5 pin are transmitted to microcontroller, when P4.1 and P4.2 is high level, and P4.3 and P4.4 is low level,
Triode Q5 and Q6 conducting, and then field-effect tube Q4 and Q10 conducting is encouraged, field-effect tube Q7 and Q8 cut-off generates direct impulse
Electric current, J1 terminal voltages increase, when P4.1 and P4.2 is low level, and P4.3 and P4.4 is high level, triode Q9 and Q11
Conducting, and then field-effect tube Q7 and Q8 conducting is encouraged, field-effect tube Q4 and Q10 cut-off generates reverse pulse current, J2 terminal electricity
Pressure increases, meanwhile, the P6.6 and P4.0 mouthfuls of conductings and cut-off that triode Q3 and Q16 are controlled by U3A of pulse shaping circuit, electricity
It is treatment pulse current sample resistance to hinder R34, and treatment pulse current is converted into pulse voltage by it, is filtered through capacitance C15, resistance
The ports P6.5 of microcontroller are transmitted back to after R35 isolation, C11-C14 is speed-up capacitor, and D9-D14 is protection diode.
The 3-axis acceleration sensor use MMA8451 sensors, MMA8451 sensors using P2.0, P2.1,
P3.0, P3.3, P3.1 pin are connect with microcontroller, and 3-axis acceleration sensor generates orientation detection signal and accelerated by three axis
P2.0, P2.1, P3.0, P3.3, P3.1 on degree sensor pass to microcontroller, and microcontroller by P2.0, P2.1,
P3.0, P3.3, P3.1 pin transmit control signal to 3-axis acceleration sensor.
The USB bridgt circuits are CP2102 microcontrollers, and microcontroller, USB bridges are connected by RST, P1.1, P2.2, TCK pin
It connects circuit and electric signal is transmitted to microcontroller by RST, P1.1, P2.2 pin, microcontroller passes through RST, P1.1, P2.2 pin
It transmits control signal and gives USB bridgt circuits.
The bluetooth module uses CC2541 microcontrollers, using 3V battery powereds, by P1.7, P3.6, P3.7, P2.3,
P2.4, P5.0-P5.5 pins are connected to microcontroller, and transmit remote control signal to bluetooth module, and LED indicating circuit is logical
It crosses VCC-LED pins to connect with microcontroller, microcontroller transmits control signal and is transmitted to LED indication by VCC-LED pins
In circuit.
The power management module uses the microcontroller of model TP4056, is connected by P1.3, P1.2, P6.4 pin micro-
Controller, BAT+ and BAT- are connected respectively to lithium battery anode, cathode, and pin CHR and STD are connected to micro-control after level conversion
The ports P1.2 and P1.3 of device processed, the lithium battery voltage between BAT+ and BAT- are sent to after resistance R46 and resistance R47 partial pressures
The ports P6.4 of microcontroller.
The beneficial effects of the invention are as follows：
（1）Under conditions of load impedance is 1K Ω resistance, the treatment crest value of impulse voltage of this product output is 0Vp----
100Vp（±20%）, pulse current peak 0mA----100mA（±20%）.Pulse width is 200 μ s ± 20% of fixed value, but
Pulse period is 10ms---14ms（±20%）Between change at random.User can select according to oneself symptom and using effect
Treat intensity（Pulse current）.
（2）This product can export specific electric impulse signal by microcontroller（Transcutaneous electrical stimulation-TENS）, stimulation
Shank top body surface sensory nerve is inhibited by micro controller system, interrupts transmission of the pain information in central nervous system；
Transcutaneous electrical stimulation can promote endorphin of the human body release with analgesic activity simultaneously（Morphine sample）Substance generates analgesia and makees
With.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is present system composition frame chart；
Fig. 2 is microcontroller power supply circuit and booster circuit figure of the present invention；
Fig. 3 is that pulse signal of the present invention forms circuit diagram；
Fig. 4 is 3-axis acceleration sensor circuit diagram of the present invention；
Fig. 5 is USB bridgt circuits figure of the present invention；
Fig. 6 is bluetooth module of the present invention, LED indicating circuit figure；
Fig. 7 is battery charger figure of the present invention；
Fig. 8 is microcontroller circuit figure of the present invention.
1. microcontroller, 2. bluetooth modules, 3. booster circuits, 4. pulse shaping circuits, 5.USB bridgt circuits, 6.LED refer to
Show circuit, 7. 3-axis acceleration sensors, 8. key-press modules, 9. power management modules, 10. lithium batteries.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Embodiment 1：A kind of hardware circuit of pain electric pulse therapeutic equipment includes at least microcontroller 1, bluetooth module 2, rises
Volt circuit 3, pulse shaping circuit 4, USB bridgt circuits 5, LED indicating circuit 6, power management module 9, key-press module 8, three axis
Acceleration transducer 7 and lithium battery 10, it is characterised in that：1 output end of the microcontroller is separately connected bluetooth module 2, boosting
Circuit 3, pulse shaping circuit 4, USB bridgt circuits 5, LED indicating circuit 6, power management module 9, key-press module 8, three axis add
7 input terminal of velocity sensor, wherein 3 output end of booster circuit connect 4 input terminal of pulse shaping circuit, and power management module 9 is defeated
Outlet connects 10 input terminal of lithium battery, and lithium battery 10 is powered for each modular circuit in power management module 9, power management module 9
It powers for microcontroller 1, microcontroller 1 controls booster circuit 3 becomes a DC voltage VH, electricity by 10 boost in voltage of lithium battery
VH is pressed to power for pulse shaping circuit 4, pulse shaping circuit 4 exports pulse signal, three axis under the control of microcontroller 1
Acceleration transducer 7 transmits three dimensional orientation information and is mutually transmitted remotely to microcontroller 1, microcontroller 1 and bluetooth module 2
Signal, 1 mutual transmission procedure information of USB bridgt circuits 5 and microcontroller are controlled, the pulse shaping circuit 4 includes H bridge electricity
Road, H-bridge circuit include four NPN triode Q5, Q6, Q9 and Q11, four power MOS pipe Q4, Q7, Q8 and Q10, Q4 and Q8
For P-channel enhancement type metal-oxide-semiconductor, and Q7 and Q10 is the enhanced metal-oxide-semiconductor of N-channel.
System-wide power supply is closed before booting, and to reduce system standby power consumption, booting afterpulse signal is formed
The output pulse signal under the control of microcontroller 1 of circuit 4 pastes electrode by collagen and acts on human body.The control of microcontroller 1 rises
The amplitude of 2 output voltage of volt circuit, it is automatic adapt to cell voltage variation, skin and collagen electrode characteristic variations, optimization treatment
Parameter allows user to obtain good treatment impression as possible.3-axis acceleration sensor 8 is that microcontroller 1 provides this therapeutic equipment
Three dimensional orientation information, only judge that this therapeutic equipment is in correct dimensional orientation and could enter working condition.Bluetooth
Module 2 can realize that information transmission can be in intelligent hand by developing specific APP with other equipment bluetooth-capable
The working condition of therapeutic equipment is monitored on machine.Computer can be downloaded to program in microcontroller 1 by USB bridgt circuits 5, together
When by USB interface realize lithium battery 10 charging.LED indicating circuit 6 is with the working condition of different Modular Display Systems.
Embodiment 2：
As shown in figure 8, microcontroller of the microcontroller 1 using model MSP430.
Select 1 core devices of power management and microcontroller that power consumption is extremely low.In the design of circuit part, MSP430 is had selected
Low, the low in energy consumption MSP430F169IPM of operating voltage controls core as the core of this product in 1 Product Family of Series of MCU
Piece.Meanwhile ultra low differential pressure, super low-power consumption power supply chip TPS73601DBVT having been selected to realize power management, which can be in pole
It works under low input-output pressure difference, oneself power consumption is extremely low.For other peripheral circuits, select to control by microcontroller 1
The break-make of metal-oxide-semiconductor processed realizes power source dynamic management, only powers when correlation unit circuit works.
Embodiment 3：
As shown in Figure 2 and Figure 8, the booster circuit 3 uses TPS73601 microcontrollers, circuit to connect microcontroller by P6.6 pins
The P6.0 mouths of device 1, microcontroller 1 are transmitted to the U2 chips in booster circuit 3 by signal is controlled.
Booster circuit 3 generates PWM outputs under the control of microcontroller 1 by dedicated DC-DC boost chips, encourages high frequency work(
Rate MOS boosting pipes, by components such as energy storage inductor, fast-recovery commutation diode, energy storage filter capacitors, in microcontroller 1
The suitable voltage of the lower output of control, is that pulse shaping is powered at circuit 4.
LDO chips U1 is the acp chip of power management module 9, due to limited battery capacity, with prolonging for usage time
Long, output voltage can gradually decline.Select TPS73601 as LDO chips, which can be in the ultra low differential pressure of 30mV
Lower work, to provide reliable and stable working power for microcontroller 1, the voltage VCC of 5 feet output passes through resistance R2 and R3 points
Pressure, then 4 feet of U1 are accessed as DC feedback voltage.Final output voltage VCC is determined by resistance R3 and R4.
The effect of booster circuit 3 is to convert battery voltage to the higher DC voltage VH of voltage.The circuit transformations efficiency
Height, simple in structure, dependable performance.In this product, the core of booster circuit 3 is DC-DC special chips U2, and 5 feet export PWM
Signal encourages external high speed MOS switch pipe Q1, coordinates the line of high quality factor around power inductance L1, and the fast recovery of high speed
Switching diode D7 collectively constitutes booster circuit 3.Control signal is added to the Enable Pin 2 of U2 through R4 by the P6.0 mouths of microcontroller 1
Foot, to need whether control booster circuit works according to working condition.After booster circuit 3 enters working condition, from micro-
The control voltage of the P6.6 mouths of controller 1 drives metal-oxide-semiconductor Q2, the high voltage VH that control booster circuit 3 exports through amplifier U3B, this
It is the dynamically boosted control circuit of one " on-demand boost ".
After microcontroller 1 is accurately calculated according to the amplitude demand of output pulse, from one control electricity of P6.6 mouthfuls of output
Pressure, for this control voltage after amplifier U3B amplifications, the drain electrode of driving metal-oxide-semiconductor Q2, Q2 are connected to the tie point of R8 and R9, the leakage of Q2
Pole voltage-to-ground is connected to 4 foot of feedback control end of boost control chip U2, the pin through resistance R11 after R9 and T10 partial pressures
Voltage can control the duty ratio of 5 foot of chip output PWM step-up excitation signals, to control the high voltage of the output of booster circuit 3.
By this control process, the output HIGH voltage VH of the booster circuit 3 is adjusted by the dynamic of microcontroller 1, to root
The output HIGH voltage VH of booster circuit 3 is adjusted according to the demand dynamic of output pulse amplitude, it is ensured that its high voltage exported can be with
The amplitude of output pulse increases and improves, and realizes that microcontroller 1 is precisely controlled the dynamic of booster circuit 3.
Dual overvoltage automatic protection circuit, which realizes, is precisely controlled treatment pulse voltage.Improve this system work
Even reliability overtension phenomenon will not occur, effectively prevent originally controlling in the case where exporting pulse terminal zero load
It treats instrument to damage caused by overvoltage, especially be that of avoiding even if in abnormal cases, will not occurring because treatment voltage is higher than setting
Definite value causes the discomfort of user.
Embodiment 4：
The pulse shaping circuit 4 by P4.1, P4.2, P4.3, P4.4, p6.5, TEST pin on pulse shaping circuit 4 with
1 respective pins of microcontroller connect, pulse shaping circuit 4 generate pulse signal by P4.1 on pulse shaping circuit 4,
P4.2, P4.3, P4.4, p6.5 pin are transmitted to microcontroller 1, when P4.1 and P4.2 be high level, and P4.3 and P4.4 be it is low
When level, triode Q5 and Q6 conducting, and then field-effect tube Q4 and Q10 conducting is encouraged, field-effect tube Q7 and Q8 cut-off generates just
To pulse current, J1 terminal voltages increase, when P4.1 and P4.2 is low level, and P4.3 and P4.4 is high level, triode
Q9 and Q11 conductings, and then field-effect tube Q7 and Q8 conducting is encouraged, field-effect tube Q4 and Q10 cut-off generates reverse pulse current,
J2 terminal voltages increase, meanwhile, the P6.6 and P4.0 mouthfuls of conductings that triode Q3 and Q16 are controlled by U3A of pulse shaping circuit 4
With cut-off, resistance R34 is treatment pulse current sample resistance, and treatment pulse current is converted into pulse voltage by it, through capacitance C15
Filtering is transmitted back to the ports P6.5 of microcontroller after resistance R35 isolation, C11-C14 is speed-up capacitor, and D9-D14 is protection two
Pole pipe.
Control pulse is provided by P4.1, P4.2, P4.3 and P4.4 terminal of microcontroller 1, impulse amplitude is by microcontroller 1
Supply voltage determine that the control impulse amplitude in this product is 3Vp, and final treatment peak value of pulse need to reach 100Vp, institute
With control pulse needs to be converted by H-bridge circuit.In this product, by four NPN triode Q5, Q6, Q9 and Q11 bufferings
Then amplification encourages metal-oxide-semiconductor field effect transistor Q4, Q7, Q8 and Q10 to realize treatment pulse output.Wherein Q4 and Q8 is P-channel enhancement type
Metal-oxide-semiconductor, and Q7 and Q10 is the enhanced metal-oxide-semiconductor of N-channel, under the accurately controlling for the control pulse that microcontroller 1 provides, by it
Common cooperation, the satisfactory treatment pulse of final output.
Above-mentioned pulse producing method can obtain the bipolarity treatment arteries and veins of Symmetrical between leading-out terminal J1 and J2
Punching, acts on human body by collagen electrode, not will produce the polarization phenomena of unipolar pulse, keep therapeutic effect more excellent.
R34 is treatment pulse current sample resistance, and treatment pulse current is converted into pulse voltage, is filtered through C15 by it,
The ports P6.5 of microcontroller are transmitted back to after R35 isolation, microcontroller 1 is used to monitor treatment pulse current after being AD converted
Size, it is ensured that treatment pulse current is steady state value, it is ensured that is not in arteries and veins while user obtains stable point electric impulse therapeutic
Rush that intensity is excessive to bring sense of discomfort to user.
C11-C14 is speed-up capacitor, is to improve the high frequency characteristics of pulse buffer amplifying circuit, D9-D14 is protection
Diode, effect are protection Hyblid Buffer Amplifier triode and pulse output field-effect tube, it is ensured that it works at higher voltages
Shi Buhui punch through damage.C16 and C17 is the filtering decoupling capacitance of this element circuit, eliminates ripple interference and exists, improves electromagnetic compatibility
Characteristic.
Control voltage of first current voltage-controlled constant-current circuit from P6.6 mouthfuls of microcontroller is sent to after resistance R16, R17 partial pressure
3 feet of U3A, the voltage of the source current of Q3 after R20 is sampled are sent to 2 feet of U3A, the two compare in amplifier U3A after 1 foot
Output voltage is sent to the grid of Q3 through R18, R19, realizes to P6.6 mouthfuls of the current constant control fruit microcontroller of the source current of Q3
Voltage constant is controlled, then treats that pulse output circuit is just constant, realizes the current constant control for the treatment of pulse current.
Second voltage-controlled constant-current control circuit treatment pulse current is sampled through resistance R34, and C15 filtering is sent to after R35 isolation
Microprocessor P6.5 feet are AD converted, by microcontroller 1 to treatment pulse current be monitored, if treatment pulse current with
Setting value has deviation, then microcontroller 1 adjusts the output high pressure VH of booster circuit by adjusting P6.6 mouthfuls of control voltage, leads to
The lifting of high pressure VH is crossed to change the size of output treatment pulse current, to realize current constant control.
The dual current constant control for the treatment of pulse current improves the reliability of this system work, realizes strong to treatment pulse
Being precisely controlled for degree, keeps the impression of user in therapeutic process more comfortable.Meanwhile this product being made to have short-circuit protection function,
Even if pulse terminal direct short-circuit will be exported, the still controlled setting value for being maintained at user of pulse current will not be due to short circuit
Damage this product.
Embodiment 5：
As shown in Figure 4 and Figure 8, the 3-axis acceleration sensor 7 uses MMA8451 sensors, MMA8451 sensors to use
P2.0, P2.1, P3.0, P3.3, P3.1 pin are connect with microcontroller 1, and 3-axis acceleration sensor 7 generates orientation detection signal
Microcontroller 1, and microcontroller are passed to by P2.0, P2.1, P3.0, P3.3, P3.1 on 3-axis acceleration sensor 7
1 transmits control signal to 3-axis acceleration sensor 7 by P2.0, P2.1, P3.0, P3.3, P3.1 pin.
MMA8451 is intelligent low-power consumption, and three axis accelerometer, high resolution, volume is minimum, is suitble to make in portable product
With.Peripheral cell value is all selected according to the chip handbook of MMA8451.
Embodiment 6：
As shown in Figure 5 and Figure 8, the USB bridgt circuits 5 are CP2102 microcontrollers, are connected by RST, P1.1, P2.2, TCK pin
Microcontroller 1 is connect, USB bridgt circuits 5 transmit electric signal to microcontroller 1, microcontroller 1 by RST, P1.1, P2.2 pin
Control signal is transmitted to USB bridgt circuits 5 by RST, P1.1, P2.2 pin.
The core devices of the circuit are the USB transceiver CP2102 that single-chip USB turns UART data transmissions.Without external electrical
Device is hindered, the clock being internally integrated can work without external crystal, be internally integrated the EEPROM of 1024 bytes, while the chip
With on piece electrification reset circuit and on piece voltage-stablizer, 3.3 V voltage outputs are generated.
The USB function control devices of the chip are compatible with 2.0 specifications of USB, have at full speed（12Mbps）Asynchronous serial data is total
Line（UART）.Support USB interface cable to RS-232 Serial Adaptation Unit power supply self-powereds, chip is using 28 pin QFN encapsulation.Outside
The selection for enclosing other elements is executed according to the requirement of chip handbook, and chip U7 is the protection circuit of CP2102 mating USB ports,
C40 is the filter capacitor of 3.3V power supplys.Lead label RST, P1.1, P2.2, TCK in Fig. 5 are connected to the same of Fig. 8 microcontrollers
On name pin.
Embodiment 7：
As shown in Figure 6 and Figure 8, the bluetooth module 2 uses CC2541 microcontrollers, using 3V battery powereds, by P1.7,
P3.6, P3.7, P2.3, P2.4, P5.0-P5.5 pins are connected to microcontroller 1, and transmit remote control signal and give bluetooth mould
Block 2, LED indicating circuit 6 are connect by VCC-LED pins with microcontroller 1, and microcontroller 1 transmits control signal and passes through VCC-
LED pins are transmitted in LED indicating circuit 6.
CC2541 power consumptions are ultralow, and operating current minimum can drop to microampere order.Ultra low voltage is powered, and 3V batteries can be used to supply
Electricity, minimum operating voltage can drop to 2.0V.Built-in 256K bytes erasable memory.
CC2541 bluetooth modules, working frequency range 2.402GHz-2.480GHz is selected to belong to ISM band, power grade is indigo plant
II grades of tooth, master chip CC2541, U10 are the voltage stabilizing chips powered exclusively for bluetooth module, and 3 foot of Enable Pin is by microcontroller
P1.7 port controllings, can decide whether as needed for bluetooth module 2 power.
One blue led indicates bluetooth module working condition, and 1s is glittering primary during bluetooth discovery pairing, and it is external its
After the Bluetooth pairing success of his equipment, 5s is glittering primary.One red LED indicates treatment pulse and therapeutic electrode in many ways
Connection, and undertake battery capacity it is too low when warning function：Red indicating light length is bright when battery capacity is too low；Therapeutic electrode
When failing correctly to connect with collagen patch and skin, red indicating light is per second glittering primary.Other 5 white indicating lights are for showing
The state of self-adapting adjustment of system, normal output treatment pulse condition, display battery capacity etc..R48-R54 is current-limiting resistance.
Embodiment 8：
As shown in fig. 7, the power management module 9 is drawn using the microcontroller of model TP4056 by P1.3, P1.2, P6.4
Foot connects microcontroller 1, and BAT+ and BAT- are connected respectively to 10 anode of lithium battery, cathode, and pin CHR and STD are through level conversion
It is connected to the ports P1.2 and P1.3 of microcontroller 1 afterwards, 10 voltage of lithium battery between BAT+ and BAT- is through resistance R46 and resistance
After R47 partial pressures, it is sent to the ports P6.4 of microcontroller 1.
TP4056 is that a kind of complete single-unit lithium ion battery uses the linear charger of constant current/constant voltage.Its bottom
Portion carries cooling fin, coordinates with less outer member so that TP4056 becomes the ideal chose of portable use.TP4056
USB power source can be suitble to work, it is consistent with the requirement of the design.
As a result of internal PMOSFET frameworks, in addition anti-down charging circuit, so not needing external isolating diode.It fills
Piezoelectric voltage is fixed on 4.2V, and charging current can carry out external setting by a resistor R41.When charging current is reaching most
When being down to setting value 1/10 after whole float charge voltage, TP4056 will terminate charging cycle automatically.
Work as input voltage（AC adapter or USB power supplys）When being taken away, TP4056 is automatically into a low current shape
Battery leakage current is down to 2uA hereinafter, battery is avoided to pass through charging circuit back discharge by state.TP4056 also may be used when there is power supply
It is placed in shutdown mode, 55uA is down to and by supply current.TP4056 is also recharged with undervoltage lockout, automatically and two use
It is charging in instruction, charge LED the status pins CHR and STD terminated.+ the 5V provided by USB when being worked due to TP4056
Power supply power supply, and the microcontroller 1 of this system is powered for+3V, in order to enable the logic level compatibility of the two, in its pin CHR
The level shifting circuit being made of Q12, Q13 and R42-R45 has been coupled outside with STD, has made the logic of the element circuit final output
Level is compatible with microcontroller 1, and status pin CHR and STD are connected to the ends P1.2 and P1.3 of microcontroller 1 after level conversion
Mouthful.In addition, the cell voltage between BAT+ and BAT- is sent to the ports P6.4 of microcontroller 1 after R46 and R47 partial pressures, so as to
Dynamic monitoring is carried out to cell operating status and cell voltage.
Claims (8)
1. a kind of hardware circuit of pain electric pulse therapeutic equipment includes at least microcontroller（1）, bluetooth module（2）, booster circuit
（3）, pulse shaping circuit（4）, USB bridgt circuits（5）, LED indicating circuit（6）, power management module（9）, key-press module
（8）, 3-axis acceleration sensor（7）And lithium battery（10）, it is characterised in that：The microcontroller（1）Output pin connects respectively
Connect bluetooth module（2）, booster circuit（3）, pulse shaping circuit（4）, USB bridgt circuits（5）, LED indicating circuit（6）, power supply
Management module（9）, key-press module（8）, 3-axis acceleration sensor（7）Input terminal, wherein booster circuit（3）Output end connects arteries and veins
Punching forms circuit（4）Input terminal, power management module（9）Output end connects lithium battery（10）Input terminal, power management module（9）
Middle lithium battery（10）It powers for each modular circuit, power management module（9）For microcontroller（1）Power supply, microcontroller（1）Control
Booster circuit（3）By lithium battery（10）Boost in voltage becomes DC voltage VH, and voltage VH is pulse shaping circuit（4）Power supply, arteries and veins
Punching forms circuit（4）In microcontroller（1）Control under export pulse signal, 3-axis acceleration sensor（7）Transmit three
Dimension space azimuth information is to microcontroller（1）, microcontroller（1）And bluetooth module（2）Mutually transmit remote control signal, USB
Bridgt circuit（5）And microcontroller（1）Mutual transmission procedure information, the pulse shaping circuit（4）Including H-bridge circuit, H bridge electricity
Road includes four NPN triodes Q5, Q6, Q9 and Q11, and four power MOS pipes Q4, Q7, Q8 and Q10, Q4 and Q8 increase for P-channel
Strong type metal-oxide-semiconductor, and Q7 and Q10 is the enhanced metal-oxide-semiconductor of N-channel.
2. a kind of hardware circuit of pain electric pulse therapeutic equipment according to claim 1, it is characterised in that：The microcontroller
Device（1）Using the microcontroller of model MSP430.
3. a kind of hardware circuit of pain electric pulse therapeutic equipment according to claim 1, it is characterised in that：The boosting electricity
Road（3）Using TPS73601 microcontrollers, circuit connects microcontroller by P6.6 pins（1）, microcontroller（1）P6.0 mouths will
Control signal is transmitted to booster circuit（3）Interior U2 chips.
4. a kind of hardware circuit of pain electric pulse therapeutic equipment according to claim 1, it is characterised in that：The pulse form
At circuit（4）Pass through pulse shaping circuit（4）On P4.1, P4.2, P4.3, P4.4, p6.5, TEST pin and microcontroller
（1）Respective pins connect, pulse shaping circuit（4）It generates pulse signal and passes through pulse shaping circuit（4）On P4.1, P4.2,
P4.3, P4.4, p6.5 pin are transmitted to microcontroller（1）, when P4.1 and P4.2 be high level, and P4.3 and P4.4 be low level
When, triode Q5 and Q6 conducting, and then field-effect tube Q4 and Q10 conducting is encouraged, field-effect tube Q7 and Q8 cut-off generates positive arteries and veins
Rush electric current, J1 terminal voltages increase, when P4.1 and P4.2 is low level, and P4.3 and P4.4 is high level, triode Q9 and
Q11 is connected, and then encourages field-effect tube Q7 and Q8 conducting, and field-effect tube Q4 and Q10 cut-off generates reverse pulse current, the ends J2
Sub- voltage increases, meanwhile, pulse shaping circuit（4）P6.6 and P4.0 mouthfuls by U3A control the conducting of triode Q3 and Q16 with
Cut-off, resistance R34 are treatment pulse current sample resistance, and treatment pulse current is converted into pulse voltage by it, is filtered through capacitance C15
Wave is transmitted back to the ports P6.5 of microcontroller after resistance R35 isolation, C11-C14 is speed-up capacitor, and D9-D14 is two poles of protection
Pipe.
5. a kind of hardware circuit of pain electric pulse therapeutic equipment according to claim 1, it is characterised in that：Three axis adds
Velocity sensor（7）Using MMA8451 sensors, MMA8451 sensors use P2.0, P2.1, P3.0, P3.3, P3.1 pin
With microcontroller（1）Connection, 3-axis acceleration sensor（7）It generates orientation detection signal and passes through 3-axis acceleration sensor（7）
On P2.0, P2.1, P3.0, P3.3, P3.1 pass to microcontroller（1）, and microcontroller（1）By P2.0, P2.1,
P3.0, P3.3, P3.1 pin transmit control signal to 3-axis acceleration sensor（7）.
6. a kind of hardware circuit of pain electric pulse therapeutic equipment according to claim 1, it is characterised in that：The USB bridges
Connect circuit（5）For CP2102 microcontrollers, microcontroller is connected by RST, P1.1, P2.2, TCK pin（1）, USB bridgt circuits
（5）Electric signal is transmitted to microcontroller by RST, P1.1, P2.2 pin（1）, microcontroller（1）Pass through RST, P1.1, P2.2
Pin transmits control signal and gives USB bridgt circuits（5）.
7. a kind of hardware circuit of pain electric pulse therapeutic equipment according to claim 1, it is characterised in that：The bluetooth mould
Block（2）P1.7, P3.6, P3.7, P2.3, P2.4, P5.0-P5.5 are passed through using 3V battery powereds using CC2541 microcontrollers
Pin is connected to microcontroller（1）, and remote control signal is transmitted to bluetooth module（2）, LED indicating circuit（6）Pass through VCC-
LED pins and microcontroller（1）Connection, microcontroller（1）It transmits control signal and LED indication is transmitted to by VCC-LED pins
Circuit（6）In.
8. a kind of hardware circuit of pain electric pulse therapeutic equipment according to claim 1, it is characterised in that：The power supply pipe
Manage module（9）Using the microcontroller of model TP4056, pass through power management module（9）On P1.3, P1.2, P6.4 pin connect
Connect microcontroller（1）, BAT+ and BAT- are connected respectively to lithium battery（10）Anode, cathode, pin CHR and STD are through level conversion
After be connected to microcontroller（1）The ports P1.2 and P1.3, the lithium battery between BAT+ and BAT-（10）Voltage through resistance R46 and
After resistance R47 partial pressures, it is sent to microcontroller（1）The ports P6.4.
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